\Tif"fa*ny\, n. [OE. tiffenay; cf. OF. tiffe ornament,
tiffer to adjust, adorn. See {Tiff} to dress.]
A species of gause, or very silk.
      The smoke of sulphur . . . is commonly used by women to
      whiten tiffanies.                        --Sir T.
                                               Browne.